2148542643 has 32 divisors (see below), whose sum is σ = 3180602880. Its totient is φ = 1281864960.

The previous prime is 2148542623. The next prime is 2148542651. The reversal of 2148542643 is 3462458412.

It is not a de Polignac number, because 2148542643 - 2⁸ = 2148542387 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (2148542623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161578 + ... + 174368.

It is an arithmetic number, because the mean of its divisors is an integer number (99393840).

Almost surely, 2^2148542643 is an apocalyptic number.

2148542643 is a deficient number, since it is larger than the sum of its proper divisors (1032060237).

2148542643 is a wasteful number, since it uses less digits than its factorization.

2148542643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12939.

The product of its digits is 184320, while the sum is 39.

The square root of 2148542643 is about 46352.3747288097. The cubic root of 2148542643 is about 1290.3711935825.

The spelling of 2148542643 in words is "two billion, one hundred forty-eight million, five hundred forty-two thousand, six hundred forty-three".